"There were two female neighbors who used to do leatherwork (with an awl) in At-Ta'if. One of them came out with her hand bleeding and claimed that her companion had injured her, but the other one denied it. I wrote to Ibn 'Abbas concerning that. He wrote, (saying) that the Messenger of Allah [SAW] ruled that the person against whom the claim was made should swear an oath. For if people were to be given what they claimed was theirs, then people would make claims against the wealth and blood of others." So he called her and recited this Verse to her: "Verily, those who purchase a small gain at the cost of Allah's Covenant and their oaths, they shall have no portion in the Hereafter..." until the end of the Verse. He called her and recited that to her, and she confessed to that. News of that reached him and he was happy.  

كَانَتْ جَارِيَتَانِ تَخْرُزَانِ بِالطَّائِفِ فَخَرَجَتْ إِحْدَاهُمَا وَيَدُهَا تَدْمَى فَزَعَمَتْ أَنَّ صَاحِبَتَهَا أَصَابَتْهَا وَأَنْكَرَتِ الأُخْرَى فَكَتَبْتُ إِلَى ابْنِ عَبَّاسٍ فِي ذَلِكَ فَكَتَبَ أَنَّ رَسُولَ اللَّهِ ﷺ قَضَى أَنَّ الْيَمِينَ عَلَى الْمُدَّعَى عَلَيْهِ وَلَوْ أَنَّ النَّاسَ أُعْطُوا بِدَعْوَاهُمْ لاَدَّعَى نَاسٌ أَمْوَالَ نَاسٍ وَدِمَاءَهُمْ فَادْعُهَا وَاتْلُ عَلَيْهَا هَذِهِ الآيَةَ { إِنَّ الَّذِينَ يَشْتَرُونَ بِعَهْدِ اللَّهِ وَأَيْمَانِهِمْ ثَمَنًا قَلِيلاً أُولَئِكَ لاَ خَلاَقَ لَهُمْ فِي الآخِرَةِ } حَتَّى خَتَمَ الآيَةَ فَدَعَوْتُهَا فَتَلَوْتُ عَلَيْهَا فَاعْتَرَفَتْ بِذَلِكَ فَسَرَّهُ  

[Machine] "That two women who were staying in the house together, other than them, went out. One of them came back with a stab wound on her stomach, and blood was coming out from the back of her hand. She said her companion stabbed her, while the other denied it. So, they sent a message to Ibn Abbas about the incident, and they informed him of the matter. He said, 'Do not give anything unless there is evidence, for the Messenger of Allah ﷺ said, "If people were given what they claimed, people would falsely claim the wealth and blood of others. But the burden of proof is upon the claimant, so make her swear an oath and recite Surah Al-Imran: 'Indeed, those who exchange the covenant of Allah and their [own] oaths for a small price...'" So, I did that, and she confessed.'"  

أَنَّ امْرَأَتَيْنِ كَانَتَا تَخْرُزَانِ لَيْسَ مَعَهُمَا فِي الْبَيْتِ غَيْرَهُمَا فَخَرَجَتْ إِحْدَاهُمَا قَدْ طُعِنَ فِي بَطْنِ كَفِّهَا بِإِشْفَى خَرَجَ مِنْ ظَهْرِ كَفِّهَا تَقُولُ طَعَنَتْهَا صَاحِبَتُهَا وَتُنْكِرُ الْأُخْرَى فَأَرْسَلَتْ إِلَى ابْنِ عَبَّاسٍ فِيهِمَا فَأَخْبَرَتْهُ الْخَبَرَ فَقَالَ لَا تُعْطِي شَيْئًا إِلَّا بِالْبَيِّنَةِ فَإِنَّ رَسُولَ اللَّهِ ﷺ قَالَ «لَوْ يُعْطَى النَّاسُ بِدَعْوَاهُمْ لَادَّعَى رِجَالٌ أَمْوَالَ رِجَالٍ وَدِمَاءَهُمْ وَلَكِنَّ الْيَمِينَ عَلَى الْمُدَّعَى عَلَيْهِ فَادْعُهَا فَاقْرَأْ عَلَيْهَا الْقُرْآنَ وَاقْرَأْ {إِنَّ الَّذِينَ يَشْتَرُونَ بِعَهْدِ اللَّهِ وَأَيْمَانِهِمْ ثَمَنًا قَلِيلًا} فَفَعَلْتُ فَاعْتَرَفَتْ»  

[Machine] The Messenger of Allah ﷺ decreed that the oath is in favor of the one who is being accused, and he said, "If people were given what they claim, people would claim the lives and properties of others. Therefore, recite upon them, 'Indeed, those who exchange the covenant of Allah and their oaths for a small price, they will have no portion in the Hereafter, and Allah will not speak to them or look at them on the Day of Resurrection, nor will He purify them; and they will have a painful punishment.' " [Al-Imran: 77] So he recited it to them and they confessed, so he informed him and explained it.  

أَنَّ رَسُولَ اللهِ ﷺ قَضَى أَنَّ الْيَمِينَ عَلَى الْمُدَّعَى عَلَيْهِ وَقَالَ لَوْ أَنَّ النَّاسَ أُعْطُوا بِدَعْوَاهُمْ لَادَّعَى نَاسٌ دِمَاءَ نَاسٍ وَأَمْوَالَهُمُ ادْعُهَا فَاقْرَأْ عَلَيْهَا {إِنَّ الَّذِينَ يَشْتَرُونَ بِعَهْدِ اللهِ وَأَيْمَانِهِمْ ثَمَنًا قَلِيلًا أُولَئِكَ لَا خَلَاقَ لَهُمْ فِي الْآخِرَةِ وَلَا يُكَلِّمُهُمُ اللهُ وَلَا يَنْظُرُ إِلَيْهِمْ يَوْمَ الْقِيَامَةِ وَلَا يُزَكِّيهِمْ وَلَهُمْ عَذَابٌ أَلِيمٌ} [آل عمران 77] فَقَرَأَ عَلَيْهِنَّ فَاعْتَرَفَتْ فَبَلَغَهُ فَسَّرَهُ  

[Machine] The Messenger of Allah ﷺ ruled that the burden of proof is on the plaintiff, even if people were given based on their claims. People will make claims regarding others' lives and wealth, so make your claim and recite upon it: "Indeed, those who exchange the covenant of Allah and their [own] oaths for a small price will have no share in the hereafter, and Allah will not speak to them or look at them on the Day of Resurrection, nor will He purify them; and they will have a painful punishment." [Surah Al-Imran 3:77]. It is said that Ibn Abbas acknowledged this, and he explained its meaning.  

رَسُولَ اللهِ ﷺ قَضَى أَنَّ الْيَمِينَ عَلَى الْمُدَّعَى عَلَيْهِ وَلَوْ أَنَّ النَّاسَ أُعْطُوا بِدَعْوَاهُمُ ادَّعَى نَاسٌ دِمَاءَ أُنَاسٍ وَأَمْوَالَهُمْ فَادْعُهَا وَاقْرَأْ عَلَيْهَا {إِنَّ الَّذِينَ يَشْتَرُونَ بِعَهْدِ اللهِ وَأَيْمَانِهِمْ ثَمَنًا قَلِيلًا أُولَئِكَ لَا خَلَاقَ لَهُمْ فِي الْآخِرَةِ وَلَا يُكَلِّمُهُمُ اللهُ وَلَا يَنْظُرُ إِلَيْهِمْ يَوْمَ الْقِيَامَةِ وَلَا يُزَكِّيهِمْ وَلَهُمْ عَذَابٌ أَلِيمٌ} [آل عمران 77] قَالَ فَاعْتَرَفَتْ فَبَلَغَ ذَلِكَ ابْنَ عَبَّاسٍ فَسَّرَهُ